When someone is found guilty of the crime that lead them to their arrest there are two places in Gotham city they can go to. Those who are deemed Criminally insane go to Arkham while the rest end up in Blackgate.

Some of the place you will find on Gotham's downtown island are the World Financial Center, Statue of Justice, Wall Street, William Street, South Gotham Courthouse, Gotham Hospital, Gotham City Hall, the Clocktower, Cathedral Square, and the Gotham City Centers. The Major Commercial District, Gotham Square, the Grand Avenue main theatre district, and the largest park in Gotham City, Robinson Park are also located here.

The Narrows is an area of the city that is dangerous and dilapidated that is located on an island in the middle of Gotham River. The only access to it is the draw bridges, tunnel, or boat. It's a Poverty level area with many run down and abandoned buildings. Arkham Asylum, Crime Alley, East End Free Clinic, The Bowery, and Park Row Theatre are among the locations you will find here.